Process for the elimination of heavy metals
AssigneeKemira Kemi Aktiebolag
InventorBengt T. Engstr om
Life of this patent
Estimating the term…
Abstract
The present invention relates to a process for the elimination of heavy metals from a closed white water system within the pulp and paper industry, wherein one adjusts the pH of the white water to between 5 and 11, and that one subsequently precipitates the resins present using a flocculation agent, whereby by a simultaneous elimination of the heavy metals is obtained.
Claims6
A process for elimination of resins and heavy metals from white water comprising adjusting the pH of white water to between greater than 7 and 11, and subsequently adding a flocculation agent, thereby causing simultaneous precipitation of resins and heavy metals.
Dependencies are inferred from the claim text.